Take-down pocket-knife.



B. D. BILERS.

TAKE-DOWN PQGKETA KNIFE.

APPLICATION Hum sfuma. 190s.

Patented July 27, 1909.

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BERNARD D. EILERS, OF UTICA, NEW YORK.

TAKE-DOWN POCKET'KNIFE.

Specification of Letters Patent.

Patented July 27, 1909.

To all 'whom it may concern:

Be it known that I, BERNARD D. ErLERs, of Utica, in the county of Oneida and State of New York, have invented certain new and useful improvements in Take -Down Pocket-Knives g and Ido hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilledvin the art to which it appertains to make and use the same, reference being had to the accompanying dravngs, and to the characters of reference marked thereon, which form part of this specification.

The object of my invention is to provide a clasped knife, having means for easily removing and replacing the blade by way of repairing or otherwise, the same ynot requiring the servicesy of a mechanic or-a multiplicity of tools.

Figure 1 shows a knife of my present improved construction in partial taken-down or disassembled condition. Fig. 2 is an enlarged crosssectional view through the locking mechanism provided in one end of the handle. Fig. 3 is an enlarged sectional view through the blade pivot. Fig. 4 is a similar view to Fig. 3 of a modified form of construction. Fig. 5 is a longitudinal sectional view taken on the center line. Fig. 6 is a similar view to that shown in Fig. 1 of a modified form of construction. Fig. 7 is a similar view of still another modied form of construction.

Referring to the reference letters and 'ligures in a more particular description, 10, 10 indicate the two parts ofthe handle, which receive therebetween at one end the hinged end of the blade 1l, and longitudinally thereof, at the back, the back spring 12. The back spring 12 is mounted on a pin 13 and engages with an angular notch on the pivotal end of the blade, as is common in clasp knives. At the end of the handle which receives the blade 11, is provided the hinge pin 14, which is secured rigidly in one handle part as to one end, and after passing through the blade is -provided with a screw-threaded portion 14a engaging in a screw-threaded opening 1lib in the other handle part. At the opposite end from the pivot 14 the parts of the/handle are adapted to be detachably secured to gether by the combined lock and spring cam 15. This part 15 is adapted to be secured to one of the parts l0 by being provided with a headed pivot 15a extending through an opening in the liner 10a. The part *15 is also provided with a stud 15b having radial bits adapted, when in open position, to enter the opening 16 in the liner 10a of the other handle part. W ith one of the handle parts 10, the springs 12 and the blade 11 assembled in the position show-n in Fig. 1, the other handle part '10 may be applied and secured at the pivot end by rotating it around the pivot until the two parts Vare drawn sufhciently close together by operation of the screw-thread. When in this position, the opening or eye `16 is slipped over the stud 15b. The cam piece 15 is then rotated to throw the bits of the stud 15b crosswise of the general longitudinal position of the opening 16, whereby the two parts of the handle are securely locked together', and, at the same time, the cam face of the part 15 throws outwardly the adjacent end of the spring 12, putting it under tension, whereby its o posite end serves on the angular shank o' the blade to hold the blade in open or closed position in a well known manner of clas knives. The cam piece 15 is provided wit a notch or shoulder as shown whichengages the end of the spring 12 in such a manner that each part serves as a lock for the other unless considerable force is applied todisengage them.

As shown in Figs. 1 and 2, the part 15 may be provided with an eye 15d for the attachment of a chain. In case this form of construction is used, the chain may be used as a means, in lieu of a wrench, for rocking the position of the part 1 5 in locking or unlocking. The eye 15d and the chain, however, maybe omitted, in which case the part 15 may a@- sume the form shown at 2O in Figs. 6 and 7, in which case it will be preferably operated by a special wrench. In order more particu.- larly to secure a sufficient thickness to secure an efficient screw-thread, at the blade end the liners are bent or turned back on themselves, as indicated at 10b, and another piece 17 interposed, around which the edges of the part 10b are folded, thus providing a metal end and boss of sufficient thickness to provide an effective mounting for the pivot.

Inv the form of construction shown in Figs. 4c and 7, in lieu of the screw-thread 14at on one end of the pivot there is provided a T- head 2l adapted to be passed through a slotlike opening 22 in the lining of the opposite member ofthe handle when the two parts of the handle are arranged in position substantially at right angles to each other. To lock the two parts of the handle securely together,

two parts are brought into parallel position. In the modified form of construction shown in Figs. 6 and 7 the bits of the locking tions, as compared with those of the construction shown in Fig. 1, and this change requires the receiving opening 24 in the other part of the handle to also be arranged differently; that is to say, extending longitudinally of the handle.

it is evident that as to the construction shown in Figs. 1 and 2 without any tool, and as to the construction shown in the other figures with a very simple special tool, any one can readily take apart the knife and replace a worn or broken blade Without being especially qualified as a mechanic or provided with a multiplicity of tools, and in a very short period of time. This would enable any ordinary merchant to supply and place in position, if desired, repair blades at little cost. Y

It is evident that other modifications and changes in and from the construction herein after inserting the head in the opening, theV stud a are arranged at right-angular posidescribed may be made without departing from the invention hereinafter claimed.

What I claim as new and desire to secure Vby Letters Patent is: L

1. The combination in a take-down clasp knife of a blade, a separable two-part handle, a spring interposed between the handle parts, a spring tensioning cam pivotally mounted upon one of the parts and having a bitted stud adapted to engage with and secure the other part, substantially as set forth.

2. The combination in a clasp knife of the handle parts, the blade, the spring interposed between the handle parts and mounted on a pivot intermediate its length, a cam for tensioning the spring pivotally secured on one of the parts, means for detachably securing the handle parts together at each end, one of such means consisting of a headed projection mounted on and rocking with the cam, subF stantially as set forth.

In witness whereof, l have affixed my signature, in presence of two Witnesses, this 26th day of August 1908.

" BERNARD D. EILERS.

Witnesses:

EMMA S. HEssn, InvING W. STREET. 

